High-pressure-resistant and corrosion-resistant automobile pressure reducer

Abstract

The utility model relates to the technical field of automobile fuel gas pressure reducers, and discloses a high-pressure-resistant corrosion-resistant automobile pressure reducer which comprises a pressure reducing valve and a water removing barrel, the water removing barrel is arranged on the side edge of the pressure reducing valve, a gas inlet pipe is connected between the side edge above the water removing barrel and an inlet of the pressure reducing valve, and a gas outlet pipe is connected to an outlet of the pressure reducing valve. The bottom of the dewatering cylinder is connected with a lower pipe communicated with the interior of the dewatering cylinder, and a bottom net transversely arranged in the dewatering cylinder is fixed below the dewatering cylinder through a connecting rod. According to the technical scheme, the inner barrel communicated with the lower pipe is arranged on the lower portion in the water removal barrel, the sealing plate which is upwards abutted by the spring is arranged in the inner barrel, the sealing plate is pressed by the abutting rod in the normal use process and does not block the penetrating opening in the upper portion of the inner barrel, and when the blind nut is screwed off to replace the water absorption filter element, the abutting rod can rise to the height and does not abut against the sealing plate any more; and the water absorbing material is pressed against the lower part of the through hole under the action of the pressure of the gas to seal the through hole, so that the risk of gas leakage during replacement of the water absorbing material is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive gas pressure regulators, and particularly relates to a high-pressure and corrosion-resistant automotive pressure regulator. Background Technique

[0002] An automotive pressure regulator is a key component widely used in gas-powered vehicles. Its main functions are pressure reduction and pressure stabilization. It is used to reduce high-pressure gas to the low-pressure level required by the engine and maintain the output pressure stable. It realizes the functions of pressure reduction and pressure stabilization through components such as regulating valve cores or diaphragms, ensuring the safe and efficient operation of the engine. The internal structure of the pressure regulator is precise and requires regular maintenance to ensure performance. To improve its corrosion resistance, a water vapor adsorption device can be connected to the intake port section to remove a small amount of residual moisture in the gas and prevent the pressure regulator from being corroded.

[0003] The water vapor adsorption device usually uses materials such as water-absorbing resin to adsorb moisture and needs to be replaced regularly. When replacing, it is necessary to take out the water-absorbing resin material from the adsorption device, which easily causes gas leakage in the supply pipe and poses a danger. Therefore, we propose a high-pressure and corrosion-resistant automotive pressure regulator. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-pressure and corrosion-resistant automotive pressure regulator. By arranging an inner cylinder communicated with the lower pipe below the inside of the water removal cylinder, and a sealing plate upwardly pushed by a spring is arranged inside it. During normal use, the sealing plate is pressed down by a push rod and does not block the through hole above the inner cylinder. When the screw cap is unscrewed to replace the water absorption filter element, the push rod will also rise in height and no longer push the sealing plate, so that it is pushed by the spring and the pressure of the gas and abuts below the through hole to seal it, avoiding the risk of gas leakage when replacing the water absorption material, and solving the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-pressure and corrosion-resistant automotive pressure regulator, including a pressure reducing valve and a water removal cylinder. The water removal cylinder is arranged on the side of the pressure reducing valve. An intake pipe is connected between the upper side of the water removal cylinder and the inlet of the pressure reducing valve. An outlet pipe is connected to the outlet of the pressure reducing valve. The bottom of the water removal cylinder is connected with a lower pipe communicated with its inside. The upper part of the water removal cylinder is connected with a screw cap by a screwing connection. A bottom net horizontally placed inside the water removal cylinder is fixed below the screw cap by a connecting rod. A water absorption filter element inside the water removal cylinder is arranged between the bottom net and the screw cap. An inner cylinder communicated with the lower pipe is arranged inside the water removal cylinder above the lower pipe. A through hole is opened in the middle position above the inner cylinder. A sealing plate with a diameter larger than the inner diameter of the through hole is arranged inside the inner cylinder. A spring is connected below the sealing plate, and the spring supports above a support net horizontally fixed inside the lower pipe. A push rod is vertically fixed at the middle position of the bottom of the bottom net. The push rod passes through the through hole into the inner cylinder and abuts and presses down the sealing plate.

[0006] By adopting the above technical solution, the residual water vapor in the gas is filtered by the water absorption filter element inside the water removal cylinder, and then is decompressed by the pressure reducing valve and flows from the air outlet pipe to the gas using pipeline. When the water absorption filter element needs to be replaced, the screw cap is directly unscrewed, and the height of the abutting rod rises and no longer abuts against the sealing plate. Under the action of the spring abutment and the gas pressure, the sealing plate is abutted tightly against the lower surface at the through hole, blocking it, and preventing gas leakage when replacing the water absorption filter element.

[0007] Optionally, a resisting groove is provided at the middle position of the surface of the sealing plate, and the abutting rod abuts against the middle position of the surface of the sealing plate through the resisting groove.

[0008] By adopting the above technical solution, the abutting rod can be accurately positioned and abutted against the middle position of the surface of the sealing plate.

[0009] Optionally, a rubber ring is fixedly attached to the inner surface of the inner cylinder on the outer ring below the through hole, and when the sealing plate rises in height, it abuts tightly against the surface of the rubber ring to seal the through hole.

[0010] By adopting the above technical solution, the sealing effect is ensured.

[0011] Optionally, only connecting rods are vertically connected and fixed on both sides between the bottom net and the screw cap, and the distance between the connecting rods is greater than the diameter of the water absorption filter element.

[0012] By adopting the above technical solution, the water absorption filter element can be drawn out from the side.

[0013] Optionally, reinforcing ribs are provided on the surface of the pressure reducing valve, and a plurality of reinforcing ribs are evenly arranged.

[0014] By adopting the above technical solution, the shell strength of the pressure reducing valve is increased, and its high-pressure resistance performance is improved.

[0015] Optionally, threads are provided on the outer rings of the lower pipe and the air outlet pipe, and the threads are evenly distributed on the outer rings of the lower pipe and the air outlet pipe.

[0016] By adopting the above technical solution, it is connected to the joints of other pipelines by screwing through the threads.

[0017] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0018] 1. In the technical solution of the present application, an inner cylinder communicating with the lower pipe is provided below the inside of the water removal cylinder, and a sealing plate pushed upward by a spring is arranged inside it. During normal use, the sealing plate is pressed down by the abutting rod and does not block the through hole above the inner cylinder. When the screw cap is unscrewed to replace the water absorption filter element, the abutting rod also rises in height and no longer presses the sealing plate, so that it is pushed by the spring and the gas pressure to abut against the lower part of the through hole to seal it, avoiding the risk of gas leakage when replacing the water absorption material.

[0019] 2. The technical solution of the present application is to provide a resisting groove in the middle of the surface of the sealing plate, and the resisting rod can be positioned in the resisting groove and resist in the middle of the surface of the sealing plate, so that it can be stably resisted and lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the high-pressure and corrosion-resistant automobile pressure reducer of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the water removal cylinder of the high-pressure and corrosion-resistant automobile pressure reducer of the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the sealing plate structure of the high-pressure and corrosion-resistant automobile pressure reducer.

[0024] In the figure: 1. pressure reducing valve; 11. reinforcing ribs; 12. air inlet pipe; 13. air outlet pipe; 2. water removal cylinder; 21. lower pipe; 211. support net; 3. screw cover; 31. bottom net; 311. push rod; 32. connecting rod; 33. water absorption filter element; 4. inner cylinder; 41. through-hole; 42. rubber ring; 43. sealing plate; 431. spring; 432. push groove; 5. thread. DETAILED DESCRIPTION

[0025] See also Figures 1-3 The utility model provides a technical solution: a high-pressure and corrosion-resistant automobile pressure reducer, comprising a pressure reducing valve 1 and a water removing cylinder 2. The inlet on the right side of the pressure reducing valve 1 is connected to an air inlet pipe 12 connected thereto, and the outlet on the left side of the pressure reducing valve 1 is connected to an air outlet pipe 13 connected thereto. Gas can enter from the air inlet pipe 12 and be discharged from the air outlet pipe 13. The structure of the pressure reducing valve 1 is the same as that of the prior art, so no further description is given. The principle is to achieve the functions of pressure reduction and voltage stabilization by adjusting components such as a valve core or a diaphragm. A thread 5 is provided on the outer ring of the air outlet pipe 13, so that the air outlet pipe 13 can be connected to the joint of the air pipe by screwing through the thread 5. A reinforcing rib 11 is provided on the surface of the pressure reducing valve 1, and a plurality of reinforcing ribs 11 are evenly provided, which can improve the shell strength of the pressure reducing valve 1 and improve its high-pressure resistance.

[0026] The water removal cylinder 2 is arranged on the right side of the pressure reducing valve 1. The upper side of the water removal cylinder 2 is communicated with the air inlet pipe 12 of the pressure reducing valve 1. The bottom of the water removal cylinder 2 is connected with a lower pipe 21 communicated with its interior. A thread 5 is arranged on the outer circle of the lower pipe 21, which is convenient for rotary connection with the joint of the gas supply pipeline. The upper part of the water removal cylinder 2 is connected with a screw cap 3 in a screwed manner. A bottom net 31 horizontally placed inside the water removal cylinder 2 is fixed below the screw cap 3 through a connecting rod 32. An absorbent filter element 33 located inside the water removal cylinder 2 is arranged between the bottom net 31 and the screw cap 3. The gas enters from the lower pipe 21, then can pass through the bottom net 31 and the absorbent filter element 33, and then the moisture in the gas is adsorbed and removed, and then enters the pressure reducing valve 1.

[0027] Only two vertical connecting rods 32 are fixedly connected between the bottom net 31 and the screw cap 3, and the distance between the connecting rods 32 is greater than the diameter of the absorbent filter element 33. When the absorbent filter element 33 needs to be replaced, the screw cap 3 can be unscrewed and taken out together with the bottom net 31 and the absorbent filter element 33. The old absorbent filter element 33 can be drawn out from the side and replaced, and then the screw cap 3 is screwed in again to realize the quick replacement of the absorbent filter element 33.

[0028] In order not to leak gas when replacing the absorbent filter element 33, an inner cylinder 4 communicated with the lower pipe 21 is arranged inside the water removal cylinder 2 above the lower pipe 21. A through hole 41 is opened at the middle position above the inner cylinder 4, and a sealing plate 43 with a diameter larger than the inner diameter of the through hole 41 is arranged inside the inner cylinder 4. A spring 431 is connected below the sealing plate 43, and the spring 431 is supported above a supporting net 211 horizontally fixed inside the lower pipe 21. The supporting net 211 does not affect the passage of gas. A resisting rod 311 is vertically fixed at the middle position of the bottom of the bottom net 31. When the screw cap 3 is normally screwed and fixed, the resisting rod 311 passes through the through hole 41 and penetrates into the inner cylinder 4, and presses down the sealing plate 43, so that the through hole 41 is not blocked by the sealing plate 43 and the gas can pass through normally.

[0029] When the screw cap 3 is unscrewed to replace the absorbent filter element 33, the resisting rod 311 will be driven to rise and no longer press down and resist the sealing plate 43. Then, under the pushing action of the spring 431, the sealing plate 43 rises. A rubber ring 42 is fixedly attached to the inner surface of the inner cylinder 4 on the outer circle below the through hole 41. When the sealing plate 43 rises, it presses tightly against the surface of the rubber ring 42 to seal the through hole 41. With the action of the gas pressure, the sealing effect is better, and air leakage can be avoided when replacing the absorbent filter element 33.

[0030] A resisting groove 432 is opened at the middle position of the surface of the sealing plate 43. The resisting rod 311 can accurately position and resist against the middle position of the surface of the sealing plate 43 through the resisting groove 432, so that it can stably press down the sealing plate 43 to make it lower.

[0031] When in use, the lower tube 21 is connected to the gas supply pipeline through the thread 5, and the gas outlet pipe 13 is connected to the gas use pipeline through the thread 5. When in use, the gas enters the inner tube 4 in the water removal tube 2 through the lower tube 21, and then enters the water removal tube 2 from the hole 41, passes through the bottom net 31 and the water absorption filter element 33, and then enters the pressure reducing valve 1 from the air inlet pipe 12. Due to the water absorption effect of the water absorption filter element 33, the residual moisture in the gas will be removed. When the pressure is reduced by the pressure reducing valve 1, it can prevent water vapor from entering the pressure reducing valve 1, thereby achieving the purpose of improving the corrosion resistance of the pressure reducing valve 1. The reinforcing ribs 11 arranged on the surface can increase the shell strength of the pressure reducing valve 1. After that, the decompressed gas flows from the gas outlet pipe 13 to the gas use pipeline. When the water absorption filter element 33 needs to be irrigated, When replacing, the screw cover 3 can be directly rotated to unscrew it. When the screw cover 3 is screwed upward, the bottom net 31 and the push rod 311 will be raised. Before the screw cover 3 is completely unscrewed, the sealing plate 43 will first contact the bottom of the through-hole 41 under the push of the spring 431 and fit tightly with the rubber ring 42 to seal the through-hole 41. After that, when the screw cover 3 is unscrewed and the water absorption filter element 33 is taken out, there will be no gas leakage. Then the water absorption filter element 33 is pulled out from the side and replaced with a new one. Finally, the screw cover 3 is screwed on the top of the water removal cylinder 2 again, and the water absorption filter element 33 is placed in the water removal cylinder 2, and the push rod 311 is lowered again to press the sealing plate 43, so that it is lowered and the sealing of the through-hole 41 is released, and it can continue to be used.

Claims

1. A high-pressure and corrosion-resistant automobile pressure reducer, comprising a pressure reducing valve (1) and a water removal cylinder (2), characterized in that: The dewatering cylinder (2) is arranged on the side of the pressure reducing valve (1), an air inlet pipe (12) is connected between the upper side of the dewatering cylinder (2) and the inlet of the pressure reducing valve (1), an air outlet pipe (13) is connected to the outlet of the pressure reducing valve (1), and a lower pipe (21) communicating with the interior of the dewatering cylinder (2) is connected to the bottom of the dewatering cylinder (2); A screw cover (3) is connected to the top of the dewatering cylinder (2) by means of a screw connection, a bottom net (31) disposed transversely inside the dewatering cylinder (2) is fixed to the bottom of the screw cover (3) by means of a connecting rod (32), and a water absorbing filter element (33) located inside the dewatering cylinder (2) is disposed between the bottom net (31) and the screw cover (3); An inner cylinder (4) connected to the lower tube (21) is arranged inside the dewatering cylinder (2) above the lower tube (21); a through hole (41) is opened at the middle position above the inner cylinder (4); a sealing plate (43) having a diameter larger than the inner diameter of the through hole (41) is arranged inside the inner cylinder (4); a spring (431) is connected below the sealing plate (43); and the spring (431) is supported above a support net (211) fixed laterally inside the lower tube (21); a support rod (311) is vertically fixed at the middle position of the bottom of the bottom net (31); the support rod (311) penetrates into the inner cylinder (4) through the through hole (41) and abuts against the downwardly pressing sealing plate (43).

2. The high pressure and corrosion resistant automobile pressure reducer according to claim 1, characterized in that: A supporting groove (432) is provided in the middle of the surface of the sealing plate (43), and the supporting rod (311) contacts the middle of the surface of the sealing plate (43) through the supporting groove (432).

3. The high pressure and corrosion resistant automobile pressure reducer according to claim 1, characterized in that: A rubber ring (42) is fixedly fitted on the inner surface of the inner cylinder (4) of the outer ring below the through-hole (41), and when the sealing plate (43) is raised, it is pressed against the surface of the rubber ring (42) to seal the through-hole (41).

4. The high pressure and corrosion resistant automobile pressure reducer according to claim 1, characterized in that: Connecting rods (32) are vertically connected and fixed only on two sides of the bottom net (31) and the screw cover (3), and the spacing between the connecting rods (32) is greater than the diameter of the water absorption filter element (33).

5. The high pressure and corrosion resistant automobile pressure reducer according to claim 1, characterized in that: The surface of the pressure reducing valve (1) is provided with reinforcing ribs (11), and a plurality of reinforcing ribs (11) are evenly arranged.

6. The high pressure and corrosion resistant automobile pressure reducer according to claim 1, characterized in that: The outer circles of the lower tube (21) and the air outlet pipe (13) are both provided with threads (5), and the threads (5) are evenly distributed on the outer circles of the lower tube (21) and the air outlet pipe (13).

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